diff --git a/Ger2KiCad.py b/Ger2KiCad.py
index 18ff671..f2f8eeb 100644
--- a/Ger2KiCad.py
+++ b/Ger2KiCad.py
@@ -12,6 +12,8 @@
 import gerber
 import re
 import numpy as np
+import sys
+import os
 ##############################################################################
  #                              Define Classes                               #
 ##############################################################################
@@ -237,14 +239,19 @@ def create_kicad_mod(name,polygons,libary="Default",tedit="5EF5C08B"):
 ##############################################################################
 
 
+if len(sys.argv) != 2:
+    print("Wrong number of arguments")
+    exit()
+
+filename = os.path.splitext(sys.argv[1])[0]
 
 
-poly=readGerber('BP.ger')
+poly=readGerber(filename+'.gbr')
 x_c,y_c = find_center(poly)
 kicad_poly = create_kicad_poly(poly,x_c,y_c,layer="F.Cu")
-output=create_kicad_mod("BP",kicad_poly)
+output=create_kicad_mod(filename,kicad_poly)
 
-f= open("BP.kicad_mod","w+")
+f= open(filename+".kicad_mod","w+")
 f.write(output)
 f.close()
 
diff --git a/README.md b/README.md
index 2d384b0..a87286d 100644
--- a/README.md
+++ b/README.md
@@ -4,4 +4,8 @@ A simple python script to convert Gerber files (RS274X) to .kicad_mod files that
 
 This script was mainly designed to import RF structures in KiCad, but should handle all polygon based designs (Uses G36/G37 codes of the RS274X standard).
 
+Example:
+
+python Ger2KiCad.py BP.ger
+
 This script uses the [pcb-tools](https://github.com/curtacircuitos/pcb-tools) package.